Re: Parallel and Perpendicular Vectors

You can find a [b]unit[b] vector (norm= 1) parallel to a given vector by dividing by the norm. Multiplying a given vector by any number will give a parallel vector. Yes, two vectors are perpendicular if and only if their dot product is 0.

Okay: find a unit vector parallel to the vector 2i+ 3j- 4k. Find a vector parallel to 2i+ 3j- 4k that has length twice as long!